M. Galib Uludag mguludag

Concept-based polymorphism in modern C++


Date	05-05-2021 - 10-17-2023
Revision	R3
Author	Guillaume Dua
Reviewers	Loïc Joly, Antoine Morrier

C++ : Polymorphic inheritance without vtable

In this article, we will see how to use CRTP, std::variant and std::visit to increase our code performances.

ANSI Escape Sequences

Standard escape codes are prefixed with Escape:

Ctrl-Key: ^[
Octal: \033
Unicode: \u001b
Hexadecimal: \x1B
Decimal: 27

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x64 NASM cheat sheet

Registers

	64 bit	32 bit	16 bit	8 bit
A (accumulator)	`RAX`	`EAX`	`AX`	`AL`
B (base, addressing)	`RBX`	`EBX`	`BX`	`BL`
C (counter, iterations)	`RCX`	`ECX`	`CX`	`CL`
D (data)	`RDX`	`EDX`	`DX`	`DL`

	/*
	* Copyright 2022-2024 NVIDIA Corporation
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software

	#include <benchmark/benchmark.h>
	#include <iostream>
	#include <random>
	#include <algorithm>
	#include <vector>
	#include <chrono>
	#include <iterator>
	#include <execution>

	static void count_if_random(benchmark::State& state)

	#include <stdio.h>

	/*
	* Calculates what Ada Lovelace labeled "B7", which today we would call the 8th
	* Bernoulli number.
	*/
	int main(int argc, char* argv[])
	{
	// ------------------------------------------------------------------------
	// Data

	0⃣ 0, keycap, zero
	1⃣ 1, number, one
	🕜 1, 30, clock, time, one, thirty, 1:30, one-thirty
	🕐 1, clock, time, one, 00, o’clock, 1:00, one o’clock
	2⃣ 2, number, two
	🕝 2, 30, clock, time, two, thirty, 2:30, two-thirty
	🕑 2, clock, time, two, 00, o’clock, 2:00, two o’clock
	3⃣ 3, keycap, three
	🕞 3, 30, three, clock, time, thirty, 3:30, three-thirty
	🕒 3, three, clock, time, 00, o’clock, 3:00, three o’clock

	#pragma once

	#include <type_traits>
	#include <limits>

	// The default enumeration category. Conversion is equivalent to static_cast.
	// Unspecialized enumeration traits use this category.
	struct enum_default { };

	// The standard-layout enumeration category. Values outside the given range are